stand by

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++stand by1  → stand by at stand1(PHRASAL VERB)2  → variant of standby at standby1

stand by  

stand by
stand by phrasal verb (see also stand)
1. to not do anything to help someone or prevent something from happening ⇨ bystander:
    I’m not going to stand by and see her hurt.
2. stand by something to keep a promise, agreement etc, or to say that something is still true:
    I stand by what I said earlier.
    He stood by his convictions.
3. stand by somebody to stay loyal to someone and support them, especially in a difficult situation:
    His wife stood by him during his years in prison.
4. to be ready to do something if necessary ⇨ standby:
    Rescue crews were standing by in case of a breakdown.
    stand by for
    Stand by for our Christmas competition.
    stand by to do something
    Police stood by to arrest any violent fans.

●ˌstand ˈby🔑 to be present while sth bad is happening but not do anything to stop it 袖手旁观；无动于衷◆How can you stand by and see him accused of something he didn't do? 你怎么能眼睁睁看着他遭人诬陷呢？🔊🔊  ➡  related noun bystander 🔑 to be ready for action 做好随时行动的准备；做好准备◆The troops are standing by. 部队随时待命出动。🔊🔊  ➡  related noun standby